Canada

Not a knock, but like a single fist-pound or a kick.

I checked the peephole, saw no one. Opened the door, no one there, nothing on the ground that might have hit the door and fallen.

I hadn't thought of that again 'til now. Now I wonder if there's a brief clip of me on TikTok, from a distance, opening my door and looking around.

On edit: I see the TikTok videos seem to be of the knocker "getting away with it," rather than of befuddled people opening their doors. I guess my 15 minutes of fame will have to wait.
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